/**
 * Copyright (C) 2002-2015  The FreeCol Team
 * <p>
 * This file is part of FreeCol.
 * <p>
 * FreeCol is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 * <p>
 * FreeCol is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * <p>
 * You should have received a copy of the GNU General Public License
 * along with FreeCol.  If not, see <http://www.gnu.org/licenses/>.
 */

package net.sf.freecol.common.i18n;

import javax.swing.table.AbstractTableModel;


public final class MergeTableModel extends AbstractTableModel
{
    private static final String[] COLUMN_NAME_ARRAY = { "file1", "file2" };

    Merge merge;


    // ------------------------------------------------------------ API methods

    void mergeChanged( )
    {
        fireTableDataChanged( );
    }


    String leftLineAtRow( int rowIndex )
    {
        return rowIndex < merge.lineFromFile1.size( )
                ? ( String ) merge.lineFromFile1.get( rowIndex )
                : null;
    }


    String rightLineAtRow( int rowIndex )
    {
        return rowIndex < merge.lineFromFile2.size( )
                ? ( String ) merge.lineFromFile2.get( rowIndex )
                : null;
    }


    public void insertInRight( int from, int to )
    {
        for ( int i = from; i <= to; i++ )
        {
            String line = leftLineAtRow( i );
            // prefix newly inserted lines with an "@" to make it easy to find
            // them when translating the new messages
            line = "@" + line;
            merge.lineFromFile2.add( i, line );
        }

        mergeChanged( );
    }


    public void deleteFromRight( int from, int to )
    {
        for ( int i = to; from <= i; i-- )
        {
            merge.lineFromFile2.remove( i );
        }

        mergeChanged( );
    }


    // ----------------------------------------------------- overridden methods

    @Override
    public int getRowCount( )
    {
        return Math.max( merge.lineFromFile1.size( ), merge.lineFromFile2.size( ) );
    }


    @Override
    public int getColumnCount( )
    {
        return COLUMN_NAME_ARRAY.length;
    }


    @Override
    public String getColumnName( int columnIndex )
    {
        return COLUMN_NAME_ARRAY[ columnIndex ];
    }


    @Override
    public Object getValueAt( int rowIndex, int columnIndex )
    {
        if ( 0 == columnIndex )
        {
            return leftLineAtRow( rowIndex );
        }
        else if ( 1 == columnIndex )
        {
            return rightLineAtRow( rowIndex );
        }
        else { throw new RuntimeException( Integer.toString( columnIndex ) ); }
    }

}
